boo-boo vs fluff

boo-boo

verb
  • To make a mistake. 

  • To defecate. 

noun
  • Feces. 

  • A minor injury, such as a cut or a bruise. 

  • A mistake or error. 

fluff

verb
  • To make a mistake in one's lines. 

  • To become fluffy, puff up. 

  • To arouse (a male pornographic actor) before filming. 

  • To do incorrectly, for example mishit, miskick, miscue etc. 

  • To break wind. 

  • To make something fluffy. 

  • To move lightly like fluff. 

noun
  • A form of roleplaying which is inconsequential and not related to the plot; often used in the context of (but not limited to) filling time. 

  • A passive partner in a lesbian relationship. 

  • Anything light, soft or fuzzy, especially fur, hair, feathers. 

  • Anything inconsequential or superficial. 

  • Marshmallow creme. 

  • A fart. 

  • A lapse or mistake, especially a mistake in an actor's lines. 

  • Fan fiction, or part of a fan fiction, which is sweet and feel-good in tone, usually involving romance. 

How often have the words boo-boo and fluff occurred in a corpus of books? (source: Google Ngram Viewer )